Short answer: A household earning around $100,000–$120,000 annually might be in range for a $400,000 house with 5% down and relatively little other debt. But your salary alone cannot tell you whether you qualify—or whether the payment fits your budget.
Here's why.
What would the monthly payment look like?
Let's use a hypothetical 7% interest rate on a 30-year fixed mortgage.
| Expense | Amount |
|---|
| Home price | $400,000 |
| Down payment (5%) | $20,000 |
| Mortgage amount | $380,000 |
| Principal and interest | $2,528 |
| Property taxes (assumed) | $400 |
| Homeowners insurance (assumed) | $200 |
| Mortgage insurance (assumed) | $130 |
| Estimated monthly payment | $3,258 |
The interest rate and additional expenses are illustrative, not a loan offer or property-specific estimates. HOA dues and any required flood insurance would add to the cost.
Notice something important: the mortgage's principal and interest are approximately $2,528, but the estimated total monthly payment is $3,258.
That's a difference of $730 every month.
Now let's talk about your debt
Mortgage lenders calculate a debt-to-income ratio, commonly called DTI. It compares your qualifying monthly debts, including the proposed housing payment, with your gross qualifying monthly income.
Different mortgage programs and lenders have different DTI requirements.
Consider two buyers earning $100,000 annually.
| Buyer A | Buyer B |
|---|
| Gross monthly income | $8,333 | $8,333 |
| Housing payment | $3,258 | $3,258 |
| Car payment | $0 | $650 |
| Credit-card minimums | $0 | $350 |
| Total monthly debt | $3,258 | $4,258 |
| Approximate DTI | 39.1% | 51.1% |
Same salary. Same house. Same down payment.
But the second buyer's additional $1,000 in monthly debt changes the qualification picture substantially.
What income might you need at different debt levels?
Using the same approximately $3,258 housing payment:
| Other monthly debt | Income at 36% DTI | Income at 43% DTI |
|---|
| $0 | $109,000 | $91,000 |
| $500 | $126,000 | $105,000 |
| $1,000 | $142,000 | $119,000 |
| $1,500 | $159,000 | $133,000 |
Annual income is rounded up to the nearest $1,000. These are mathematical examples, not approval thresholds or recommended budgets.
The lesson: A $400,000 home isn't automatically affordable or unaffordable because of your salary. Your down payment, full housing cost, existing debts, and available savings all matter.
Qualifying for a mortgage is different from being comfortable making the payment.
Now See Where You Stand.
You've seen how the numbers work. Take the free two-minute HoopCasters Buyer Checkpoint to explore your own homebuying situation and receive an immediate readiness result.
Take the Free Buyer CheckpointBuyer Checkpoint is an educational readiness tool, not a mortgage application, preapproval, or lending decision.
Return to Answer Library